Inkstand.



Patented Ubi. I6, |900.

1G. PELLINGER.- INKSTAND.

(Application led May 5, 1900.)

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GEORGE PELLINGER, OF VVEEHAVKEN, NEW JERSEY.

INKSTAND."

SPECIFICATION forming part of Letters Patent No. 659,762, dated October16, 1900.

Application filed May 5, 1900.

To all whom it may concern,.-

Beit known that I, GEORGE PELLINGER, residing at Weehawken, in thecounty of Hudson and State of New Jersey, have invented an Improvementin Inkstands, of which the following is a specification.

This invention relates to an improved inkstand by means of whichadeterminable quantity of fluid can be automatically transferred fromthe well and retained in the dipping-cup until exhausted by use orduring the operation of writing, While the cup can be automaticallyemptied when desired With the return of the fluid to the Well, theimprovement affording a uon-spillable inkstand of simple constructionand operation which avoids the spurting, variable, and uncertain actioncommon to automatic constructions heretofore employed.

In the accompanying drawings, Figure lis atop plan view of an inkstandembodying my invention. Fig. 2 is a vertical sectional view of the same.Fig. 3 is aside elevation of the cup and piston employed therein. Fig. 4is a side elevation of the cap and cylinder therefor. Fig. 5 is a planview showing the bar for regulating and limiting the rise of the pistonwithin the cylinder in which it operates.

As shown in the drawings, the Well l, rcceives the cap 2, which forms anair-tight closure for the mouth thereof, the cap being preferablyprovided with a ring 3 and a gasket 4. A cylinder 5, preferably integralWith the cap, extends into the well, and a normally-closed air-vent 6affords means for the communication of outside air to the well. A piston7, provided with a packing 8, made of any suitable material, as leather,and held in place by a disk 9, fits within the cylinder and forms aconstant closure therefor. An extension 10 of the piston isscrew-threaded and receives a cross-bar ll, which, being adjustable,regulates and limits the upward movement of the piston within thecylinder, the downward movement being limited by a iiange Il at the topof the piston. A dipping-cup l2 is formed in the top of the piston andcommunicates with the interior of the Well through the bore or aperture13.

In operation the parts being in place, as illustrated in Fig. 2,theink-well may be filled by opening the vent 6 and pouring into thetonv 7 within the cylinder 5,

Serial No. 15,582. (No model.)

cup I2. When the well has been filled, the ventis closed. Thedipping-cupl2 may then be emptied and iilled at will by the respectiveoperations of lifting and depressing the pis- The rise of the pistonincreases the space that may be occupied Withiu the well or creates apartial vacuum which is replaced by the downi'low of the ink in the cupand bore, the atmospheric pressure upon the surface of the ink containedtherein returning the same to the body of ink in the Well andmaintaining the equilibrium thereof. Upon pressing down the piston inkrises through the bore into the cup, Where it is maintained as long asdesired, thus aording a limited but constant quantity of ink for dippingthe pen. By this means all the ink contained in the well may be liftedinto the cup for use, excepting that there must be sufficient within thewell to form a seal for the aperture or bore of the piston, theextension of which may be carried to the bottom of the well. Thereduction of the volume of ink by use or otherwise is compensated byaccess of air to the volume contained within the Wellwhen the piston islifted, the fall of ink within the bore being accompanied by sufficientadmission of air therethrough to effect the compensation. As the jointsat the mouth of the well are iiuidtight and as the small quantity of inkmaintained in the cu p when the piston is depressed is returned to thewell and equilibrium maintained by atmospheric pressure upon raising thepiston, it is thus rendered impossible to spill the ink, there ispractically no loss from evaporation, and there is little opportunityfor collecting dust and coagulating the ink, while the quantity desiredfor inking the pen may readily be provided and maintained in the cup.

Having thus described my invention, I claiml. In combination with anink-well, a cylinder extending into said Well and having freecommunication with the cavity thereof, and a piston having a dip-aperture therethrough movable within said cylinder, said piston beingfitted fluid-tight Within said cylinder and held by frictional contactin operative or inoperative position, substantially as specified.

2. In combination with an ink-well, a cylinder extending into said welland having free communication with the cavity thereof, a piston having adip-aperture therethrough movable Within said cylinder, said pistonbeing fitted duid-tight Within said cylinder and held by frictionalcontact in operative or inoperative position,k and means for limitingthe movements of said piston, substantially as specified.

3. In combination with an ink-Well, a cylinder extending into said Welland having free communication with the cavity thereof, a piston having adip-aperture therethrough movable within said cylinder, said piston being provided with a packing for forming a fluid-tight connection withsaid cylinder and by frictional .contact holding said pist-on indepressed or elevated position, substantially as specified.

4;. In an inkstand, a Well, a cap for closing the mouth thereof, acylinder extending into said Well, a vent through said cap, incombination with a piston having a dipping-cup and an aperture leadingtherefrom to said well, and means for regulating and limiting the extent of the movement of lsaid piston Within said cylinder, substantiallyas specified.

5. In an inkstand, a well, a cap for closing the mouth thereof, acyliiider extending into said well, in combination with a piston havinga dipping-cup therein and an aperture leading therefrom to said well, ascrewthreaded projection depending from Said piston, and a cross-barthereon, substantially as specified.

In testimony whereof I have hereunto signed my name, in thegpresence ofthe subscribing witnesses, this 3rd day of May, 1900.

GEO. PELLINGER.

Witnesses: l

M. DITTENHOEFER, THEO. G. SHMITZ.

